Top-roll-saddle mechanism.



L. T. HOUGHTON.

TOP ROLL SADDLE MECHANISM.

APPLICATION FILED 001'. 25, 1907.

Patented July 13, 1909.

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L. T. HOUGHTON.

TOP ROLL SADDLE MECHANISM. APPLICATION FILED 00m. 25, 1907.

927,540. Patented July 13, 1909.

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UNITED STATES PATENT @FFTQIJ.

LEWIS T. IIOUGIITON, OF WORCESTER, MASSACHUSETTS.

TOP-ROLL-SADDLE MECHANISM.

T 0 all whom it may concern:

Be it known that I, Lnwrs T. IIOUGHTON, a citizen of the United States, residing at \Vorcester, county of Worcester, and State of Massachusetts, have invented an Improvement in Top-Roll-Saddle Mechanism, of which the following description, in connection with the accompanying drawing, is a specification, like letters on the drawing representing like parts.

This invention relates to top roll saddle mechanism and especially to the fulcrum and its support for sustaining the weighted lever of the stirrup for the top roll saddle.

In my Patent No. 879,641, dated February 1S, 1908, I have illustrated, described and claimed a top roll saddle mechanism in which the fulcrum for the lever can be adjusted to vary the relative lengths of the lever arms without effecting in any way any change in the position of the stirrup or with out throwing the stirrup out of its correct right angular relation to the top roll saddle. The adjustment of the fulcrum provides for varying the effective pull of the weight on the stirrup, and this may be accomplished as stated above without causing any change in the correct position of the stirrup with relation to the top roll saddle. In the device shown in said patent the correct position of the weighted lever is maintained by means of a flange extending laterally from the fulcrum support against which flange the end of the lever rests.

In my present invention I have provided for maintaining the lever in proper position by a lever-positioning device associated with the lever.

I will first describe some eml'iodiments of the invention and then point out the novel features thereof in the appended claims.

In the drawings, Figure 1 shows in side viewa top roll saddle, its stirrup, the weighted lever therefor, and the fulcrum for the weighted lever. Fig. 2 is a section on the line aa, Fig. 1; Fig. 3 is a view showing on an enlarged scale the opposite side of the lever 6 from that shown in Fig. 1 Fig. 4 a view showing the modified form of the invention Fig. 5 is a section on the line b b, Fig. 4;; Fig. 6 is a section on the line Zd, Fig. 4.; Fig. 7 is a perspective view showing the fulcrum and the fulcrum holder Fig. 8 is a section similar to Fig. 6 showing a modified form of the invention; Fig. 9 is a side view of the lower end of the lever 6 shown in Fig. 8.

Specification of Letters Patent.

Application filed October 25, 1907.

Patented July 13, 1909.

Serial No. 399,175.

at is the top roll saddle, 2 the top rolls, 3 the bottom rolls, 5 the stirrup suspended from the saddle, and 6 the weighted lever for the stirrup, which lever has the weight suspended therefrom. These parts are such as are usually found in top roll saddle mechanisms and may be of any suitable or usual construction.

The lever 6 is fulcrumed on a fulcrum 7 which in the present embodiment is carried by a fulcrum holder 10 which in turn adjustably secured to a fulcrum support or stand 9, the latter being secured to the roller beam 21 by means of a suitable screw 20, all as shown and described in my co-pending application Serial Number 398,791, filed October 23, 1907.

The fulcrum support or stand 9 has the slot 8 therein through which the fulcrum 7 extends and the fulcrum holder 16 is supported in position on the fulcrum support by means of a clamping screw 13 which is sccured to the fulcrum support and which extends through a slot 12 in the fulcrum holder.

As shown in l igs. 1 to 3, the weighted lever 6 is provided with a slot 15 through which the fulcrum 7 extends, said slot permitting the fulcrum to be adjusted. relative to the levor 6 thereby to change the relative lengths of the lever arms thereof, such auljustmcnt being effected by adjusting the fulcrum holder horizontally on the fulcrum support.

It is import ant that the stirrup 5 should always be maintained in right angular relation to the top roll saddle, and where the lc-- ver 6 is provided with the slot 15 for permitting adjustment of the fulcrum, it is necessary to provide some lever-pr sitioning device for maintaining the lever (l in such a position that the stirrup 5 will have its correct right angular relation with the top roll saddle. In l igs. 1 to 3 this lever-positioniug device is in the form of a plate 50 which is adjustabl'y secured to the lever by means of a clamping screw 52 extending through a slot 53 in the lever and through said plate, the lower end 51 of said plate being shaped to engage the fulcrum 7, as shown in Fig. 3. This plate 50 when in its adjusted position acts to prevent the lever 6 from sliding forwardly or to the left on the fulcrum and when it is adjusted properly with relation to the position of the fulcrum, the lever 6 will be maintained by said lcver-positioning device 50 in the proper position, as above described,

In this form of the invention, whenever the fulcrum 7 is adjusted in the slot 15 thereby to change the relative lengths of the lever arms of the lever 6, the lever-positioning device 50 will have to be correspondingly adjusted to maintain the correct position of the stirrup 5.

In Fig. 4 the slot 15 in the lever 6 is shown as provided with notches 99 which notches serve as the lever-positioning means. In this embodiment the fulcrum 7 is carried by the fulcrum holder 10 which .is adjustably secured to the fulcrum support by means of the clamping screw 13, as above described, and said fulcrum extends through the slot 8 in the fulcrum support 9. Said fulcrum is provided with the fulcrum edge 98 which is adapted to enter one of the notches 99 according to the adjusted position of the fulcrum. The Width of the slot 15 is preferably such that the fulcrum cannot be adjusted longitudinally therein without first withdrawing the fulcrum laterally from the slot and then inserting said fulcrum back in said slot again in its adjusted position. The notches 99 thus serve to prevent longitudinal movement of the lever on the fulcrum and to hold the lever in the correct position.

In lieu of making the lever 6 with the positioning notches 99 I may provide said lever with a p urality of apertures through any one of which the fulcrum may extend and which serve to position the lever. Such an embodiment of my invention is shown in Figs. 8 and 9 wherein the lever 6 is provided with a plurality of positioning apertures 100. In this embodiment the fulcrum 7 is carried by the fulcrum holder 10 and the latter is adjustably secured to the fulcrum support 9 by the clamping bolt 13, all as described with reference to the other embodiments of my. invention. The fulcrum 7 is adapted to ex tend through any one of the apertures 100 according to the desired adjusted position of the fulcrum, and the particular aperture through which the fulcrum extends serves to hold the lever and consequently the stirrup 5 in the correct position. In this embodiment the adjustment of the fulcrum relative to the lever involves withdrawing the fulcrum from the aperture in the lever, or what is the same thing withdrawing the lever from the fulcrum, and then after adjusting the fulcrum replacing the lever correctly on the fulcrum.

The apertures 100 may all be situated in the same line or may be in two or more rows, as shown in Fig. 9. When they are placed in two or more rows it may be necessary to adjust the fulcrum support vertically if the fulcrum is changed from an aperture in one row to that in another row in order to bring the lever at the proper height. This vertical adjustment of the fulcrum support can. be effected however in a manner hereinafter described. Where the Weighted lever is projusted vertically. This manner of vertically adjusting the fulcrum support is described and claimed in my copending application Serial Number 398,791, filed October 23, 1907 and forms no part of my present invention. I have found, however, that with this construction whenever the weighted lever 6 is applied to the fulcrum, the fulcrum support tends to turn slightly 011 the screw 20, and to prevent this I have in the present embodiment provided the lever with a nose portion 113 which extends through a slot 112 in a flange 111 formed on the fulcrum support, said nose by engaging in the slot serving to prevent the fulcrum support from turning any.

I have not attempted to describe herein all embodiments of my invention but have merely referred to three embodiments which have been selected for the purpose of illustrating the invention.

I-Iaving fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a top roll saddle mechanism, the combination with a weighted lever for a top roll saddle, of a fulcrum for the lever adjustable relative to the lever to vary the relative lengths of the lever arms thereof, and leverpositioning means associated with the lever.

2. In a top roll saddle mechanism, the combination with a weighted lever for a top roll saddle, of a stirrup connectedto said lever, a fulcrum for the lever adjustable relative thereto to change the relative lengths of the lever arms thereof, and a lever-positioning device carried by the lever and engaging said fulcrum.

3. In a top roll saddle mechanism, the combination with a weighted lever for a top roll saddle, of a fulcrum support, a fulcrum for the lever adjustably carried by the support, and means associated with the lever for maintaining the latter in the same position in all adjusted positions of the fulcrum.

4. In a top roll saddle, the combination with a weighted lever for a top roll saddle, of a fulcrum support, a fulcrum for the lever sustained by said support and adjustable relative to the lever thereby to vary the relative lengths of the lever arms thereof, and means associated with the lever to main tain the correct position thereof while per mitting the adjustment of the fulcrum.

5. In a top roll saddle mechanism, the combination with a weighted lever for a top roll saddle, of a fulcrum su port, a fulcrum for the lever carried there y, an adjusting screw to which said fulcrum support is swiveled, and means associated with the lever to prevent the fulcrum support from turning on the adjusting screw when said lever is sustained by the fulcrum.

6. In a top roll saddle mechanism, the combination with a weighted lever for a top roll saddle, of a fulcrum support, a fulcrum for the lever carried by the support, said fulcrum support having a laterally-extending slotted flange through the slot in which the end of the lever is inserted.

7. In a top roll saddle mechanism, the combination with a weighted lever for a top roll saddle, of a fulcrum support, a fulcrum for said lever adjustably carried by said fulcrum support, an adjusting screw to which said fulcrum support is swiveled, and means associated with the lever to prevent the fulcrum su port from turning on its adjusting screw w 1en said lever is sustained by the fulcrum.

8. In a top roll saddle mechanism, the combination with a weighted lever for a top roll saddle, of a fulcrum support, a fulcrum for the lever carried thereby, said fulcrum being separate from the fulcrum support, an adjusting screw to which said fulcrum support is swiveled, and means associated with the lever to prevent the fulcrum support from turning on the adjusting screw when said lever is sustained by the fulcrum.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

LEWIS 'l. IIOUGIITON.

I/Vitnesses Louis 0. SMITH, MARGARET A. DUNN. 

